Electron ionization mass spectrometry: Quo vadis?
Sign Up to like & getrecommendations! Published in 2022 at "ELECTROPHORESIS"
DOI: 10.1002/elps.202100392
Abstract: Mass spectrometry (MS) is a fundamental technique to identify compounds by their mass‐to‐charge ratio. It is known that MS can only detect target compounds when they are converted to ions in the gas phase. The… read more here.
Keywords: mass spectrometry; ionization; technique; electron ionization ... See more keywords
Electron Attachment and Electron Ionization of Formic Acid Clusters Embedded in Helium Nanodroplets
Sign Up to like & getrecommendations! Published in 2019 at "Journal of the American Society for Mass Spectrometry"
DOI: 10.1007/s13361-018-02124-z
Abstract: AbstractWe report the results of an experimental study of electron ionization of large helium nanodroplets doped with formic acid (FA). Several homologous series of cluster anions are observed, including [FAn-H]−, undissociated FAn−, and these ions… read more here.
Keywords: electron attachment; acid clusters; formic acid; electron ionization ... See more keywords
Discrimination of seized drug positional isomers based on statistical comparison of electron-ionization mass spectra
Sign Up to like & getrecommendations! Published in 2020 at "Forensic Chemistry"
DOI: 10.1016/j.forc.2020.100261
Abstract: Abstract Positional isomers of novel psychoactive substances (NPS) present challenges in seized drug identification given the high degree of similarity in the resulting electron-ionization (EI) mass spectra. In this work, a previously developed method, which… read more here.
Keywords: positional isomers; mass spectra; mass; electron ionization ... See more keywords
Rapid Approximate Subset-Based Spectra Prediction for Electron Ionization–Mass Spectrometry
Sign Up to like & getrecommendations! Published in 2023 at "Analytical Chemistry"
DOI: 10.1021/acs.analchem.2c02093
Abstract: Mass spectrometry is a vital tool in the analytical chemist’s toolkit, commonly used to identify the presence of known compounds and elucidate unknown chemical structures. All of these applications rely on having previously measured spectra… read more here.
Keywords: mass spectrometry; prediction electron; electron ionization; prediction ... See more keywords
Gas Analysis by Electron Ionization Combined with Chemical Ionization in a Compact FTICR Mass Spectrometer.
Sign Up to like & getrecommendations! Published in 2018 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.8b01107
Abstract: In this Article, a compact Fourier transform ion cyclotron resonance (FTICR) mass spectrometer based on a permanent magnet is presented. This instrument has been developed for real-time analysis of gas emissions. The instrument is well-suited… read more here.
Keywords: analysis; gas; fticr mass; electron ionization ... See more keywords
Cold Electron Ionization (EI) Is Not a Supplementary Ion Source to Standard EI. It is a Highly Superior Replacement Ion Source.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the American Society for Mass Spectrometry"
DOI: 10.1021/jasms.1c00241
Abstract: GC-MS usually employs a 70 eV electron ionization (EI) ion source, which provides mass spectra with detailed fragment ion information that are amenable for library search and identification with names and structures at the isomer… read more here.
Keywords: ion source; electron ionization; standard; ion ... See more keywords
Carbene-based Difluoromethylation of Bisphenols: Application to the Instantaneous Tagging of Bisphenol A in Spiked Soil for Its Detection and Identification by Electron Ionization Gas Chromatography-Mass Spectrometry
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-53735-9
Abstract: The rapid and efficient difluoromethylation of a panel of eleven bisphenols (BPs) for their enhanced detection and identification by Electron-Ionization Gas Chromatography-Mass Spectrometry (EI-GC-MS) is presented. The derivatization employs the inexpensive, environmentally benign agent diethyl… read more here.
Keywords: detection; electron ionization; ionization gas; detection identification ... See more keywords
Direct-Injection Electron Ionization-Mass Spectrometry Metabolomics Method for Analyzing Blueberry Leaf Metabolites That Inhibit Adult T-cell Leukemia Proliferation.
Sign Up to like & getrecommendations! Published in 2019 at "Planta medica"
DOI: 10.1055/a-0725-8295
Abstract: Metabolic profiling is often used to identify possible correlations between a compound's metabolic profile and biological activity. Direct-injection electron ionization-mass spectrometry "fingerprinting" is useful for characterizing biological materials. We demonstrate the utility of direct-injection electron… read more here.
Keywords: mass spectrometry; direct injection; injection electron; electron ionization ... See more keywords